*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: Georgia, serif;
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 680px;
    margin: 0 auto;
    padding: 2rem 1rem;
    color: #222;
    background: #fff;
}

header {
    margin-bottom: 3rem;
}

header a {
    text-decoration: none;
    color: #222;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

header nav a {
  margin-right: 1rem;
  text-decoration: none;
  color: inherit;
  
}

header nav a:hover {
  opacity: 0.6;
  border-bottom: 1px solid currentColor;
}

h1 { font-size: 2.0rem; }
h2 { font-weight: normal; font-size: 1.4em; }

footer {
    margin-top: 4rem;
    font-size: 0.8rem;
    color: #999;
}